147 hsts are the go-to - Federal Premium 9 mm Luger 147 Grain HST Jacketed Hollow Point Nickel Plated Brass Centerfire Pistol Ammunition

The ballistics gel tests on YouTube speak for themselves - the expansion on these is best in class and they are very reliable for daily carry and long term storage (sealant is included on the neck and primer). I landed on the 147 grain because I love the recoil impulse but they are also less likely to over penetrate across all the tests and documentation I’ve seen. Only self defense rounds I’ve ever used and I would trust my life to these without a doubt.